Yesterday I opened up an old electric toothbrush, had one normal battery (AA) and one rechargable battery. Only the normal one had this kind of mold fungus on it.
(Not native speaker, sorry if I misspelled something)
In: Other
Putting your Alkaline batteries in a fridge to keep them cold supposedly keeps them from leaking and somehow makes them last longer/keep their charge. Not sure if it’s true but my Grandpa swears on it.
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